OFFICIAL PARTNER OF ULTRA4 RACING

High-quality gears
Made with pride in the USA

For over 50 years, US Gear has manufactured differential and transmission components in Chicago, Illinois. From engineering, to gear cutting, heat treating, and testing, all our product development and manufacturing processes take place in-house. For all you enthusiasts and racers, trust that our ring and pinion gears are of the highest quality, field-tested in the harshest conditions, always dependable, and most importantly, made with pride in the USA. US Gear is a brand of AxleTech.

We inspect that US Gear ring and pinion every time we pull it out of the car and it always comes out great We have never had a failure with that part.

“We have never had a failure with that part.”

Andrew McLaughlin, Off-Road Racer

Your 9" gear set combo was so impressive after the first lap, that I thought people were behind me bumping to get by. While in fact, it was pure traction that was never felt before. A few adjustments and it was game on! Thank you so much for the support, I just can't express enough the difference your product made on the truck's performance.

“Thank you so much for the support, I just can't express enough the difference your product made on the truck's performance.”

André Laurin, Owner, Team OTSFF

US Gear is extremely dedicated to continuously improving and investing in making its product better. I believe what really separates a performance company from the rest of the field is a constant obsession with being proud of what you produce today knowing that tomorrow you will evolve and make it better.

“I can unequivocally state that the people at US Gear “get it"”

Jeff Stange, Strange Engineering

It’s been my philosophy to get the best parts money could buy. US Gear builds the best product out there.

“It’s been my philosophy to get the best parts money could buy. US Gear builds the best product out there.”

Loren Healy, Off-Road Racer

Here at Moser, we understand that gear sets require a level of attention that borders on art as much as science...a knack for knowing how, why, and when to apply a skill set. It is with confidence that we recommend US Gear, as they have long been a timely supplier of the highest quality and have dependable delivery times.

“US Gear has long been a timely supplier of the highest quality and have dependable delivery times.”

Kip Hayden, Moser Engineering

It’s been my philosophy to get the best parts money could buy. US Gear builds the best product out there.

“It’s been my philosophy to get the best parts money could buy. US Gear builds the best product out there.”

Loren Healy, Professional Off-Road Racer

We switched to US Gear well over 30 years ago. We stock over 12,000 sets of US gears which we sell with confidence because of the quality, plus, they’re made here in the good old USA! So it’s a win-win situation – good for our country and good for you. Ask me personally, buy US Gear!

“Good for our country and good for you”

Tom Watt, Tom's Differentials

I would like to thank all of the people from US Gear for manufacturing the highest quality ring and pinions on the market, which are all made in the USA. Not only did we run our fastest ET, but we were able to put 35 runs on it which is ten more passes that we have ever gotten out of other company gears. Thanks again for a great product!

“I would like to thank all of the people from US Gear for manufacturing the highest quality ring and pinions on the market, which are all made in the USA.”

Rob Adler, A-Team Speed Shop

Our customers demand the highest quality parts regardless of cost and US Gear fits the bill perfectly. The highest quality USA made gears you can buy!

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Awesome highlight video of Loren Healy’s week at #KOH2019. We are pumped for this year’s Ultra4 Racing season!🏁#raceusgear#funhaver#ultra4#kingofthehammers#Repost Loren Healy・・・Great video from the Fun-Haver Off-Road team highlighting our week at Ultra4 Racing's King of the Hammers! Excited to get back to racing March 23rd for the first West Coast Regionals race, see you there! #koh2019 #kingofthehammers